Symptoms
- Wire bends or crushes instead of cutting through
- Cutting edges leave a ragged or torn end
- Jaws don't meet flush when closed
- Tool feels loose or wobbly at the pivot
Likely causes
- CommonCutting edges dulled from repeated useWire cutting gradually wears the hardened cutting edge.
- CommonCutting wire harder than the tool is rated forCutting hardened wire or cable with standard cutters chips the edge.
- PossiblePivot pin loose or wornPlay in the pivot lets the jaws misalign and pinch instead of cut cleanly.
- PossibleNick or chip in the cutting edgeA damaged section catches the wire instead of shearing through it.
What to do
- Close the jaws fully with nothing in them and check that the cutting edges meet flush with no gap.
- If the pivot has play, snug the pivot screw or rivet slightly with a screwdriver or by peening it carefully.
- Inspect the cutting edges under light for nicks or rounding; light nicks can sometimes be honed out with a fine stone.
- Confirm the wire gauge and hardness are within the tool's rated capacity; use bolt cutters or a dedicated tool for heavier wire.
- Clean any built-up debris or corrosion from the jaws with a wire brush.
- If cuts are still ragged after these checks, the tool is likely worn out and should be replaced.
- Match the right cutter type (diagonal, side, or bolt cutter) to the wire type going forward.
Tools and parts
- Fine sharpening stone
- Screwdriver
- Wire brush
Replacement wire cutters or pliersSearch: “diagonal wire cutters or lineman pliers”
When to call a pro
Not usually a professional repair; replacing a worn tool is typically cheaper than trying to have it reground.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.